Automatic boiler-feed



L. C. SPRINGER. AUTOMATIC BOILBR FEED.

(No Model.)y

Patented Apr. 10, 1894.

STATES PATENT OFFICE.

LORIN C. SPRINGER, OF CHICAGO, ILLINOIS.

AU'TOM-ATIC BOILER-FEED.

SPECIFICATION forming part of Letters Patent No. 518,0O9,dated April 10, 1894. Application filed September 2, 1893. Serial No. 484,629. (No model.)

To @ZZ whom t may concern:

Beit known that I, LoEIN C. SPRINGER, a citizen of the United States, residing at Chir cago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Automatic Boiler-Feeds, of which the following is a full, clear, and exact description, that will enable others to make and use the same, reference being had to the accompanying drawings, forming a part of this specication.

This invention relates to an automatic device for injecting water into steam-generators under pressure, and is more especially intended for use in connection with the low pressure system for heating apartment buildings, hotels and dwellings.

In the drawings: Figure l is the brokenaway vertical transverse section of a steamboiler and inclosing masonry, showing the improved device attached in a working position; Fig. 2 a broken-away vertical longitudinal section of the device proper on line2 Fig. 3, looking in the direction indicated by the arrow; and Fig. 3, a horizontal section on line 3, Fig. 2.

A is a steam-boiler and A the inclosing masonry.

The feed device consists of a number of parts which Will be described in detail. The feed-regulating vessel, B, is located on` a level with the water-line of the boiler, and is preferably of the cylindrical form shown. The upper end of this vessel or drum is connected with one end of steam-pipe C by means of a stuffing-box joint a, so as to permit of a vertical movement of said vessel. The opposite end of the pipe C is inserted in and communicates with the steam-space of the boiler. The upper end of the valve-tube D is inserted in and has a threaded engagement with the lower end of the vesselB, as at a. The lower end of tube D extends down into the valve-part E, forminga tubular connection between the regulating vessel and valve. A sleeve F is located inside of the valve, the respective ends of which have a threaded engagement with the interior surface of the valve-casing, as at a2; The lower part of the tube D is inclosed by this sleeve and is movably connected therewith by the stuffing-box joint as, so that the tube has an endwise movement therein, as shown in Fig. 2. The tube is provided with the water-ports b, and the sleeve with the corresponding ports b.` The broken-away pipe G connects the valve-chamber with the water reservoir or other source of supply. One end of the feed-pipe His connected to the lower end of the valve part; the opposite end being inserted in the boiler at a point below the water-line. A spiral spring d is'coiled on the tube D, the lower end resting on the gland d', and the upper end bearing against the nut cl2 mounted on the threaded part of tube D. By this means the tension of the spring may be increased or diminished as required. The adjustable rod h connects the steam and feed-water pipes and prevents the former from being forced out of the vessel B.

The vessel B is provided with the usual water-gage h; the broken line g indicating about the usual height of the water in the vessel, the upper part being filled with steam acting as an equalizing agent.

The operation is as follows: The waterports in the tube and sleeve are shown wide open so that a full supply is shown entering the boiler. Now,- as the volume of water in the boiler and the regulating-vessel rises above the normalheight, the increasin gweight of the water will gradually force the Vessel and connecting-tube downwardly against the pressure of the spiral spring, and close, or partially close, the water ports so as to shut oir" the supply entering the boiler, or partially so. When the waterl supply diminishes the tension of the spring will force the `vessel upward and bring the ports into aregistering position, when the water will again pass into the boiler, and so on as the varying service may require. By this arrangement Water may be automatically supplied to a low pressure boiler without having the reservoir or tank placed at any great elevation, and to a high-pressure boiler by locating the tank at the proper height.

A weight or other equivalent arrangement may be substituted for the spring shown.

Having thus describedfmy invention, what I claim as new, and desire to secure by Letters Patent, isr

l. In a device of the kind described, the combination of the steam-pipe, theregulating- IOO vessel or drum, having a slip-joint connecting with said pipe, the valve-part, the tube, provided with Water-ports and connecting said vessel and valve by a slip-joint, the feed-pipe, and the water pipe, connecting with the source of supply, substantially as set forth.

2. In a device of the kind described, the combination of the regulating vessel, the

valve-part, the tube, adjustably connecting said vessel and valve, and the spiral spring, 1o mounted on said tube, substantially as set forth.

LORIN C. SPRINGER. Witnesses:

L. M. FREEMAN, J. B. DoNALsoN. 

